From 409f5134acfd683f75ca1f8b9da60fc155e1cbf3 Mon Sep 17 00:00:00 2001
From: Jan Herling <janherling@meta.com>
Date: Mon, 6 Jan 2025 11:48:33 -0800
Subject: [PATCH] Improved custom exposure in AVFLiveVideo

Summary:
1. Moved the lock statement above the value statement
2. Increase precision

Reviewed By: enpe

Differential Revision: D67608722

fbshipit-source-id: 2b28c3307798e69e97616b60dbbee04db4bbf2be
---
 impl/ocean/media/avfoundation/AVFLiveVideo.mm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/impl/ocean/media/avfoundation/AVFLiveVideo.mm b/impl/ocean/media/avfoundation/AVFLiveVideo.mm
index 8ec2d485..6052eca1 100644
--- a/impl/ocean/media/avfoundation/AVFLiveVideo.mm
+++ b/impl/ocean/media/avfoundation/AVFLiveVideo.mm
@@ -317,10 +317,11 @@ - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CM
 			}
 			else
 			{
-				const CMTime exposureDuration = CMTimeMake(int64_t(duration * 1000.0 + 0.5), 1000);
+				const CMTime exposureDuration = CMTimeMakeWithSeconds(duration, 1000 * 1000 * 10);
 
-				[captureDevice_ setExposureModeCustomWithDuration:exposureDuration ISO:[captureDevice_ ISO] completionHandler:nil];
 				[captureDevice_ setExposureMode:AVCaptureExposureModeLocked];
+				[captureDevice_ setExposureModeCustomWithDuration:exposureDuration ISO:AVCaptureISOCurrent completionHandler:nil];
+
 				result = true;
 			}